| dc.description.abstract | Nowadays, Manufacturing industries increase every year. One of them that
continues to experience demand enhancement, especially demand for cement is
PT Semen Gresik. PT Semen Gresik, Tuban Plant II, attempts to meet customers
demand with a production and inventory plan that contained in RKAP (Rencana
Kerja dan Anggaran Perusahaan – Corporate Work Plan and Budget). However, in
reality, RKAP target was not achieved, particularly in 2010. A number of finished
products that had been produced were not in accordance with RKAP because of
problems that occurred in planning, inventory and operational area.
Based on RKAP release/actual production data in 2010, an analysis with
dynamic system approach is conducted. This approach enables organization to
know factors that influence to manufacturing performance, interrelation between
system’s elements, therefore scenarios of policy could be designed. Stella and
Vensim are used in this study as software to build the model and simulation. This
study started by conducting causal loop, entering data and equations to the Stella
software, finally the result of simulation is compared with actual data and
validation of model.
The findings show that factors influence in manufacturing performance
availability of fuel (coals), trass, limestone, clay, and occurrence of downtime and
production capacity. Based on sensitivity analysis, the most influential factors are
the fuel/coals (delay of 1,5 month impact to coals availability), production
capacity (upgrading capacity to 1% could achieve RKAP target), and downtime
(maintenance in a minimum one hour will reduce 14,3% downtime). Several
policy scenarios are suggested in this research. | en_US |
